Enamel composition.



BUDOLF BICKMLANN, OF COLOGNE-MABIENBUBG, GERMANY.

ENAMEL COMPOSITION.

Specification Letters Patent.

No Drawing.

To all whom it may concern:

Be it known that I, RCDOLF Ric-muss, a subject of the GermanEmperor, andresident of (fologne-Marienburg, Germany, have invented certain new anduseful Improvements in Enamel Compositions, of which the following is aspecification.

In my Patent No. 716,106 I have described a process for manufacturingwhite opaque enamels with the acid of antimoniate of sodium.

Briefly speaking, this invention consists of a compound in the form of awhite, opaque enamel comprising a difiicultly soluble autimoniate ofpotassium with an enamel. The use ofantimoniate of potassium for thesame purpose could not be carried out'su'ccessfully until now because ofthe more or less great solubility of this compound in water when thesaid antimoniate of potassium was prepared in the usual way.

Now, I have found out that an antimoniate of potassium difficult todissolve and extremely well suited for manufacturing white opaqueenamels is obtained when during its preparation an excess of potassiumoompounds is avoided, that is to say that only that amount of thesecompounds is added which is required for converting theantrmony materialinto antimoniate of potas- Slum.

The chemical process for making insoluble Patented Oct. 31, 1916.

Application filed February 25, 1913. Serial 110. 750,593.

antimoniate of potassium may be illustrated by the following equation:5810 0 2KOH eKNO The same result is obtained when during the manufactureof the antimoniate of poficultly soluble antimoniate of potassiumcombined with an enamel.

In testimony whereof I have hereunto set my hand in presence of twowitnesses.

RUDOLF RICKMAXN.

Witnesses GEBTRUOH SOHKBAU, JOSEPH STOM'EN.

